Vladislav Vaintroub 2336e0b394 MDEV-20206 : Crash inside timer_callback()[threadpool_win.cc:419] ...

The most likely cause of the crash is that a timer fired, after it was closed.

MSDN documents such a possibility, in the documentation for
CloseThreadpoolTimer() function, and recommends disabling the timer before
calling WaitForThreadpoolTimerCallbacks()/CloseThreadpoolTimer().

The fix follows this recommendation.

Note, that 5.5-10.1 disabled the timer before close, but this code
was lost in threadpool refactoring in 10.2

2019-09-09 13:52:30 +02:00

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